I've been planning to build my own Romhack for a while now,
but every time I wanted to redesign firered or leafgreen, it came to a certain bug:
After escaping from a Pokémon during the game and getting back to Overworld,
the NPC closest to me looks like the protagonist and I can only walk a few more steps before running against an invisible wall.
I tried to use different Roms and different versions of Advance Map, but the bug appeared every time :(
I hope someone knows something like this and knows how to fix this problem :)